EP 1500449 A2 20050126 - Sintered sprocket for silent chain and production method therefor
Title (en)
Sintered sprocket for silent chain and production method therefor
Title (de)
Gesintertes Zahnrad für lärmgedämpfte Zahnkette und Verfahren seiner Herstellung
Title (fr)
Pignon fritté pour chaîne silencieuse et son procédé de fabrication
Publication
Application
Priority
- JP 2003277287 A 20030722
- JP 2004197524 A 20040705
Abstract (en)
A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of the gear teeth by forming by rolling, having a surface hardness of 700 HV or higher, and is useful for a crankshaft, a cam shaft, a balancer shaft, or a water pump shaft of an internal combustion engine: (1) an Fe-Mo-C based sintered alloy containing Mo at 1.0 to 2.0% by mass; (2) an Fe-Mo-Ni-C based sintered alloy containing Mo at more than 1.0 and not more than 2.0% by mass, and Ni at more than 1.0 and not more than 2.5% by mass, or (3) an Fe-Mo-Ni-Cu-C based sintered alloy containing Mo at 0.3 to 1.0% by mass, Ni at not less than 1.5 to less than 3.0% by mass, and Cu at 1.0 to 2.5% by mass.
IPC 1-7
IPC 8 full level
B22F 5/08 (2006.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); C21D 9/32 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/16 (2006.01); F16G 13/04 (2006.01); F16H 55/06 (2006.01); F16H 55/30 (2006.01)
CPC (source: EP KR US)
B22F 5/08 (2013.01 - EP KR US); C22C 33/0264 (2013.01 - EP KR US); F01L 1/022 (2013.01 - KR); F16H 55/30 (2013.01 - EP KR US); B22F 2003/145 (2013.01 - EP KR US); B22F 2003/241 (2013.01 - EP KR US); B22F 2003/248 (2013.01 - EP KR US); B22F 2998/10 (2013.01 - EP KR US); F01L 1/022 (2013.01 - EP US); F01L 2301/00 (2020.05 - EP KR US); F01L 2303/00 (2020.05 - EP KR US); F16H 55/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB
DOCDB simple family (publication)
EP 1500449 A2 20050126; EP 1500449 A3 20060607; CN 100338373 C 20070919; CN 1576650 A 20050209; JP 2005054989 A 20050303; JP 4301507 B2 20090722; KR 100601267 B1 20060713; KR 20050012161 A 20050131; US 2005039575 A1 20050224; US 7041149 B2 20060509
DOCDB simple family (application)
EP 04016478 A 20040713; CN 200410054518 A 20040722; JP 2004197524 A 20040705; KR 20040057340 A 20040722; US 88502304 A 20040707